Alright, let's work through 90445448 times 90447462 step by step
90445448 × 90447462 = 90447462 × (90445448)
+ 90447462 × 8 what gives us 723579696
+ 90447462 × 40 resulting in 3617898480
+ 90447462 × 400 what gives us 36178984800
+ 90447462 × 5000 that results in 452237310000
+ 90447462 × 40000 resulting in 3617898480000
+ 90447462 × 400000 producing 36178984800000
+ 90447462 × 0000000 that equals 0
+ 90447462 × 90000000 yielding 8140271580000000

= 8180561221052976
